package cn.com.fattiger.collection;

public class ArrayListDemo {
	public static void main(String[] args){
		int sum = 0;
		int sum1 = 0;
		int type = 6;
		for(int i = 1;i<=30;i++){
			sum += type * (i * 2) / 3;
		}
		System.out.println(sum);
		System.out.println(sum1);
	}
}
